Cache deposit signature verification (#1298)

* Bake in Altona testnet (without genesis state)

* Add sig verification, without optimization

* Start integration with genesis service

* Update config.yml

* Fix eth2_testnet_config test

* Stop using default spec in genesis

* Fix lcli compile error

* Update min genesis time

* Fix typo

beacon_node/genesis/tests/tests.rs

@@ -53,6 +53,7 @@ fn basic() {
                 ..Eth1Config::default()
             },
             log,
+            spec.clone(),
         );
 
         // NOTE: this test is sensitive to the response speed of the external web3 server. If